Update at 5:20 p.m. — Dominion is currently reporting 775 customers without power in Arlington, mostly in the Boulevard Manor, Arlington Forest, Douglas Park and Ashton Heights neighborhoods. It appears that Alexandria bore the brunt of the storm, with nearly 7,000 outages in the city, according to the power company.
The National Weather Service reported a 41 mph wind gust at Reagan National Airport during the height of the storm, around 4:30 p.m.
Update at 5 p.m. — A new Flash Flood Warning has been issued for most of Arlington until 8 p.m.
From NWS:
BULLETIN – EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
457 PM EDT WED AUG 10 2022THE NATIONAL WEATHER SERVICE IN STERLING VIRGINIA HAS ISSUED A
* FLASH FLOOD WARNING […]
* UNTIL 800 PM EDT.
* AT 457 PM EDT, DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING HEAVY RAIN ACROSS THE WARNED AREA. BETWEEN 1.5 AND 2.5 INCHES OF RAIN HAVE FALLEN. ADDITIONAL RAINFALL AMOUNTS OF 0.5 TO 1.5 INCHES ARE POSSIBLE IN THE WARNED AREA. FLASH FLOODING IS ONGOING OR EXPECTED TO BEGIN SHORTLY.
HAZARD…FLASH FLOODING CAUSED BY THUNDERSTORMS.
SOURCE…RADAR.
IMPACT…FLASH FLOODING OF SMALL CREEKS AND STREAMS, URBAN AREAS, HIGHWAYS, STREETS AND UNDERPASSES AS WELL AS OTHER POOR DRAINAGE AND LOW-LYING AREAS.
* SOME LOCATIONS THAT WILL EXPERIENCE FLASH FLOODING INCLUDE… ARLINGTON… ALEXANDRIA… BETHESDA… COLLEGE PARK… LANGLEY PARK… FALLS CHURCH… CORAL HILLS… BLADENSBURG… HOWARD UNIVERSITY… FORT TOTTEN… GALLAUDET UNIVERSITY… ROSSLYN… NATIONALS PARK… CRYSTAL CITY… RFK STADIUM… REAGAN NATIONAL AIRPORT… UNIVERSITY OF MARYLAND… LANDOVER… HYATTSVILLE… TAKOMA PARK…
PRECAUTIONARY/PREPAREDNESS ACTIONS…
TURN AROUND, DON’T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD DEATHS OCCUR IN VEHICLES.
BASEMENT FLOODING CAN OCCUR QUICKLY AND CREATE A LIFE-THREATENING SITUATION. IF YOU ARE IN A BASEMENT, OR A RESIDENCE BELOW STREET LEVEL, MOVE TO A HIGHER FLOOR IMMEDIATELY.
Flash Flood Warning including Washington DC, Arlington VA and Silver Spring MD until 8:00 PM EDT pic.twitter.com/HjZgRg8AMa
— NWS Baltimore-Washington (@NWS_BaltWash) August 10, 2022
Earlier: Much of Arlington is currently under a Severe Thunderstorm Warning.
Two separate storm warnings have been issued for northern and southern portions of the county, plus a Flash Flood Warning for Alexandria and southern portions of Arlington.
One passenger on a departing flight that’s holding on the tarmac at Reagan National Airport said the storm there is causing the plane to shake. The airport is currently under a ground stop and experiencing 30-45 minute flight delays, according to the FAA.
More from the National Weather Service:
BULLETIN – IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Baltimore MD/Washington DC
428 PM EDT Wed Aug 10 2022The National Weather Service in Sterling Virginia has issued a
* Severe Thunderstorm Warning for… The northwestern District of Columbia… Southeastern Montgomery County in central Maryland… Northwestern Arlington County in northern Virginia… Northeastern Fairfax County in northern Virginia…
* Until 515 PM EDT.
* At 428 PM EDT, a severe thunderstorm was located over North Bethesda, or over Rockville, and is nearly stationary.
HAZARD…60 mph wind gusts.
SOURCE…Radar indicated.
IMPACT…Damaging winds will cause some trees and large branches to fall. This could injure those outdoors, as well as damage homes and vehicles. Roadways may become blocked by downed trees. Localized power outages are possible. Unsecured light objects may become projectiles.
* Locations impacted include… Arlington, Rockville, Bethesda, Olney, Pimmit Hills, Mclean, Howard University, American Legion Bridge, Fort Totten, Aspen Hill, Potomac, North Bethesda, North Potomac, Fairland, Tysons Corner, White Oak, Redland, Takoma Park, Great Falls and Colesville.
PRECAUTIONARY/PREPAREDNESS ACTIONS…
For your protection move to an interior room on the lowest floor of a building.
Severe Thunderstorm Warning including Silver Spring MD, Rockville MD and Bethesda MD until 5:15 PM EDT pic.twitter.com/uXNgdPRYDb
— NWS Baltimore-Washington (@NWS_BaltWash) August 10, 2022
Severe Thunderstorm Warning including Alexandria VA, Bailey's Crossroads VA and Lincolnia VA until 5:00 PM EDT pic.twitter.com/i4ysD3yzyL
— NWS Baltimore-Washington (@NWS_BaltWash) August 10, 2022
Flash Flood Warning including Alexandria VA, Bailey's Crossroads VA and Lincolnia VA until 7:30 PM EDT pic.twitter.com/jH0HNaeT2r
— NWS Baltimore-Washington (@NWS_BaltWash) August 10, 2022
Arlington — along with D.C., Alexandria, Fairfax County and most of the rest of Northern Virginia — is under a Flood Watch today.
The watch takes effect at 2 p.m. and will remain in effect into the evening hours as slow-moving storms roll into the area.
The combination of slow storm movement and the potential for training — a series of downpours focused on a specific west-to-east area — raises the possibility of flooding, forecasters say.
More from the National Weather Service:
…FLOOD WATCH REMAINS IN EFFECT FROM 2 PM EDT THIS AFTERNOON THROUGH THIS EVENING…
* WHAT…FLASH FLOODING CAUSED BY EXCESSIVE RAINFALL CONTINUES TO BE POSSIBLE. […]
* IMPACTS…EXCESSIVE RUNOFF MAY RESULT IN FLOODING OF RIVERS, CREEKS, STREAMS, AND OTHER LOW-LYING AND FLOOD-PRONE LOCATIONS.
* ADDITIONAL DETAILS…
– SHOWERS AND NUMEROUS THUNDERSTORMS ARE EXPECTED THIS AFTERNOON INTO THIS EVENING. RAINFALL AMOUNTS WILL AVERAGE AROUND 1 TO 1.5 INCHES ACROSS THE AREA, BUT LOCALLY HIGHER AMOUNTS OF 2 TO 4 INCHES ARE LIKELY AND MUCH OF THAT MAY FALL IN A ONE TO TWO HOUR TIMEFRAME. HEAVY RAIN IN SHORT PERIODS OF TIME MAY CAUSE CREEKS AND STREAMS TO RAPIDLY RISE OUT OF THEIR BANKS ALONG WITH POTENTIAL FLASH FLOODING IN URBAN AREAS.
– HTTP://WWW.WEATHER.GOV/SAFETY/FLOODPRECAUTIONARY/PREPAREDNESS ACTIONS…
YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED.
Showers and thunderstorms are likely later this afternoon and evening which may produce locally heavy rainfall. A Flood Watch has been issued for DC/Balt metro areas and SW into northern VA and the Potomac Highlands of VA/WV to account for the potential for flash flooding. pic.twitter.com/qRlPK8L4YV
— NWS Baltimore-Washington (@NWS_BaltWash) August 10, 2022
Slow-moving storms this afternoon and evening may pack downpours that could cause flooding, forecasters say.
The National Weather Service just issued a Flood Watch for Arlington, the District and most of the region as a result.
From NWS:
1020 AM EDT Fri Aug 5 2022
…FLOOD WATCH IN EFFECT FROM 3 PM EDT THIS AFTERNOON THROUGH THIS EVENING…
* WHAT…Flash flooding caused by excessive rainfall is possible. […]
* WHEN…From 3 PM EDT this afternoon through this evening.
* IMPACTS…Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations.
* ADDITIONAL DETAILS…
– Showers and thunderstorms will develop this afternoon and may last into the evening. Any thunderstorms will be capable of producing very heavy rainfall, with localized totals of two to four inches possible. Much of the rain may fall within a one to three hour period, making rapid rises in creeks and streams possible, as well as flash flooding in urban areas.
– http://www.weather.gov/safety/floodPRECAUTIONARY/PREPAREDNESS ACTIONS…
You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.
Update at 10:20 p.m. — Portions of northern Arlington County are now under a Flash Flood Warning after an extended period of heavy rain.
Flash Flood Warning including Washington DC, Arlington VA and Chillum MD until 1:15 AM EDT pic.twitter.com/9ywbqnDoL2
— NWS Baltimore-Washington (@NWS_BaltWash) August 5, 2022
From the National Weather Service:
BULLETIN – EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Baltimore MD/Washington DC
1016 PM EDT Thu Aug 4 2022The National Weather Service in Sterling Virginia has issued a
* Flash Flood Warning for… District of Columbia… South Central Montgomery County in central Maryland… West Central Prince Georges County in central Maryland… Northern Arlington County in northern Virginia…
* Until 115 AM EDT.
* At 1016 PM EDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1 and 2 inches of rain have fallen. Additional rainfall amounts of 0.5 to 1.5 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly.
HAZARD…Flash flooding caused by thunderstorms.
SOURCE…Radar.
IMPACT…Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas.
* Some locations that will experience flash flooding include… Arlington… Bethesda… Falls Church… Howard University… Fort Totten… Rosslyn… Gallaudet University… RFK Stadium… Hyattsville… Takoma Park… Chevy Chase… Martin`s Additions…
Adams Morgan… Georgetown… American University… US Capitol… Friendship Village… Kenilworth… Silver Spring… Chillum…PRECAUTIONARY/PREPAREDNESS ACTIONS…
Turn around, don’t drown when encountering flooded roads. Most flood deaths occur in vehicles.
Earlier: A Severe Thunderstorm Warning was just issued for Arlington.
A storm approaching the area from the west is packing strong winds and torrential rain, forecaster say.
More from the National Weather Service:
BULLETIN – IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Baltimore MD/Washington DC
628 PM EDT Thu Aug 4 2022The National Weather Service in Sterling Virginia has issued a
* Severe Thunderstorm Warning…
* Until 715 PM EDT.
* At 627 PM EDT, a severe thunderstorm was located over Annandale, moving east at 10 mph.
HAZARD…60 mph wind gusts and quarter size hail.
SOURCE…Radar indicated.
IMPACT…Damaging winds will cause some trees and large branches to fall. This could injure those outdoors, as well as damage homes and vehicles. Roadways may become blocked by downed trees. Localized power outages are possible. Unsecured light objects may become projectiles.
* Locations impacted include… Arlington, Alexandria, Bethesda, Bowie, Annandale, Clinton, Springfield, College Park, Fort Washington, Greenbelt, Fairfax, Langley Park, Beltsville, Fort Hunt, Vienna, Groveton, Forestville, Falls Church, Huntington and Largo.
If you think today is hot, bad news: tomorrow is going to be worse.
The National Weather Service has already issued a Heat Advisory for Thursday, calling for heat index values of up to 106 in parts of the D.C. region.
The current NWS forecast for Arlington calls for a high temperature of 95 and a heat index of up to 101.
Forecasters say tomorrow’s heat will be dangerous those who are outside or somewhere without air conditioning. They also recommend staying hydrated, checking on vulnerable relatives and neighbors and making sure kids and pets are not left in unattended vehicles.
The Heat Advisory will be in effect from 11 a.m.-8 p.m. on Thursday.
More from NWS:
URGENT – WEATHER MESSAGE
National Weather Service Baltimore MD/Washington DC
102 PM EDT Wed Aug 3 2022…HEAT ADVISORY IN EFFECT FROM 11 AM TO 8 PM EDT THURSDAY…
* WHAT…Heat index values up to 106 expected.
* WHERE…Portions of central, north central, northeast, northern and southern Maryland, The District of Columbia and northern Virginia.
* WHEN…From 11 AM to 8 PM EDT Thursday.
* IMPACTS…Hot temperatures and high humidity may cause heat illnesses to occur.
PRECAUTIONARY/PREPAREDNESS ACTIONS…
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances.
Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1.
Update at 3:50 p.m. — A Severe Thunderstorm Warning has been issued for the far northern tip of Arlington.
Severe Thunderstorm Warning for DC, Montgomery, Prince Georges, Arlington, and Fairfax counties until 4:30PM. Main hazards are 60mph wind gusts and quarter size hail. #vawx #dcwx #mdwx pic.twitter.com/3TnBKyYKUY
— Washingtonian Weather Geeks (@WashingtonianWx) July 25, 2022
Earlier: Arlington, D.C. and most of the region is now under a Severe Thunderstorm Watch.
The watch, which was issued around 1:45 p.m., is in effect until 10 p.m.
Forecasters say storms packing damaging winds and heavy downpours are possible this afternoon and evening. More from NWS:
Thunderstorms will further develop and intensify initially near/just of the mountains, and subsequently spread eastward toward the I-95 corridor through late afternoon and early evening. Damaging winds are the primary hazard.
A Severe Thunderstorm Watch is in effect for areas along and east of I-81 through 10 PM tonight. Main impacts will be damaging winds. A localized flood threat exists as well with rainfall rates of 1-2"/hr possible in any stronger thunderstorms over a short period of time. pic.twitter.com/6QqD8L4ssZ
— NWS Baltimore-Washington (@NWS_BaltWash) July 25, 2022
A severe thunderstorm watch has been issued for parts of DE, DC, MD, NJ, PA, VA, WV until 10 PM EDT pic.twitter.com/EbdNHbuIcu
— NWS Severe Tstorm (@NWSSevereTstorm) July 25, 2022
Local authorities, meanwhile, are encouraging residents to prepare for the possibility of severe weather.
Some of the tips include charging essential devices and securing loose items from lawns and balconies.
https://twitter.com/ArlingtonVaFD/status/1551631655596544000
We may experience power outages during today's potential for severe weather. Remember to treat all uncontrolled intersections as a four way stop. https://t.co/rS2lRnXH4X pic.twitter.com/VwXXlZTabM
— ArlingtonCountyPD (@ArlingtonVaPD) July 25, 2022
(Updated at 11:15 a.m.) It will be hot and humid today — so bad that the National Weather Service has issued a Heat Advisory for Arlington, D.C. and other parts of the area.
The advisory will go into effect later this morning.
Forecasters advise staying inside unless you have to go out, and drinking lots of fluids if you must spend time outside.
From NWS:
…HEAT ADVISORY IN EFFECT FROM 11 AM TO 8 PM EDT THURSDAY…
* WHAT…Heat index values around 102 to 106, with highest values across east-central Virginia.
* WHERE…In District of Columbia, District of Columbia. In Virginia, Prince William/Manassas/Manassas Park, Fairfax, Stafford and Spotsylvania Counties, and Arlington/Falls Church/Alexandria.
* WHEN…From 11 AM to 8 PM EDT Thursday.
* IMPACTS…Hot temperatures and high humidity may cause heat illnesses to occur.
PRECAUTIONARY/PREPAREDNESS ACTIONS…
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances.
Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1.
As a result of the heat, Arlington Transit is allowing water bottles on board its buses.
“Due to expected extreme high temperatures the next few days, riders are permitted to drink water while riding ART buses,” the transit agency said this morning. “Please use bottles or containers that can be tightly sealed (no open cups), and dispose of any waste in trash or recycling receptacles.”
Storms, some of which may pack damaging winds, are also in the forecast today and expected to reach the area later this afternoon. Most storms are expected to stay south of Arlington, however.
Update at 1:50 p.m. — A Severe Thunderstorm Watch was just issued for parts of the D.C. area, including Arlington, and much of the D.C.-Baltimore-Philly-NYC corridor. That’s in addition to the Flood Watch, below.
From the National Weather Service:
Scattered severe thunderstorms are possible this afternoon and evening, mainly north of the D.C. metro area. Damaging wind gusts are the primary threat with an isolated tornado also possible.
A severe thunderstorm watch has been issued for parts of CT, DE, DC, MD, NJ, NY, PA, VA, WV until 10 PM EDT pic.twitter.com/eal2Prh0i3
— NWS Severe Tstorm (@NWSSevereTstorm) July 18, 2022
Earlier: It’s the middle of July and the humidity level outside is roughly that of an unventilated bathroom after a half-hour hot shower.
Unsurprisingly, that combination is a recipe for possible downpours — and flooding — tonight.
The National Weather Service just issued a Flood Watch, which will go into effect at 4 p.m. Forecasters say “multiple rounds of storms” could cause flooding later today.
There is a marginal risk of severe weather this afternoon and evening from @NWSSPC. Damaging winds are the primary threat, though isolated instances of flooding are possible. #DCwx #MDwx #VAwx #WVwx pic.twitter.com/MxVvFeR5NO
— NWS Baltimore-Washington (@NWS_BaltWash) July 18, 2022
More from NWS:
FLOOD WATCH
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
931 AM EDT MON JUL 18 2022…FLOOD WATCH IN EFFECT FROM 4 PM EDT THIS AFTERNOON THROUGH THIS EVENING…
* WHAT…FLASH FLOODING CAUSED BY EXCESSIVE RAINFALL IS POSSIBLE.
* WHERE…PORTIONS OF DC, MARYLAND AND NORTHERN VIRGINIA […]
* WHEN…FROM 4 PM EDT THIS AFTERNOON THROUGH THIS EVENING.
* IMPACTS…EXCESSIVE RUNOFF MAY RESULT IN FLOODING OF RIVERS, CREEKS, STREAMS, AND OTHER LOW-LYING AND FLOOD-PRONE LOCATIONS.
* ADDITIONAL DETAILS…
– AFTERNOON TO EVENING SHOWERS AND THUNDERSTORMS MAY PRODUCE VERY HEAVY RAINFALL CAPABLE OF FLASH FLOODING. THIS COULD INCLUDE MULTIPLE ROUNDS OF STORMS WHICH WOULD ENHANCE THE FLOOD RISK. RAINFALL RATES MAY REACH 1 TO 2 INCHES PER HOUR, LOCALLY HIGHER IN SPOTS. THE D.C. AND BALTIMORE METROS WILL BE THE MOST SUSCEPTIBLE GIVEN RECENT HEAVY RAINFALL THE PAST COUPLE OF WEEKS.
– HTTP://WWW.WEATHER.GOV/SAFETY/FLOODPRECAUTIONARY/PREPAREDNESS ACTIONS…
YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED.
A Severe Thunderstorm Warning was just issued for Arlington County.
A strong storm is approaching the area from the west. The line of storms has already prompted a severe warning in Fairfax County.
The line of storms recently produced a 61 mile per hour wind gust at Dulles International Airport, according to the National Weather Service.
Arlington also remains under a Flood Watch tonight.
More from NWS:
BULLETIN – IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
538 PM EDT TUE JUL 12 2022THE NATIONAL WEATHER SERVICE IN STERLING VIRGINIA HAS ISSUED A
* SEVERE THUNDERSTORM WARNING…
* UNTIL 615 PM EDT.
* AT 537 PM EDT, SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE EXTENDING FROM NEAR NORTH POTOMAC TO NEAR LINTON HALL, MOVING EAST AT 30 MPH.
HAZARD…60 MPH WIND GUSTS AND QUARTER SIZE HAIL.
SOURCE…RADAR INDICATED.
IMPACT…DAMAGING WINDS WILL CAUSE SOME TREES AND LARGE BRANCHES TO FALL. THIS COULD INJURE THOSE OUTDOORS, AS WELL AS DAMAGE HOMES AND VEHICLES. ROADWAYS MAY BECOME BLOCKED BY DOWNED TREES. LOCALIZED POWER OUTAGES ARE POSSIBLE. UNSECURED LIGHT OBJECTS MAY BECOME PROJECTILES.
* LOCATIONS IMPACTED INCLUDE… ARLINGTON, ALEXANDRIA, CENTREVILLE, DALE CITY, ROCKVILLE, BETHESDA, RESTON, ANNANDALE, SPRINGFIELD, COLLEGE PARK, FORT WASHINGTON, GREENBELT, FAIRFAX, LANGLEY PARK, BELTSVILLE, FORT HUNT, VIENNA, GROVETON, FALLS CHURCH AND HUNTINGTON.
PRECAUTIONARY/PREPAREDNESS ACTIONS…
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A BUILDING.
LARGE HAIL AND DAMAGING WINDS AND CONTINUOUS CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS. MOVE INDOORS IMMEDIATELY. LIGHTNING IS ONE OF NATURE’S LEADING KILLERS. REMEMBER, IF YOU CAN HEAR THUNDER, YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING.
Severe Thunderstorm Warning including Washington DC, Arlington VA and Alexandria VA until 6:15 PM EDT pic.twitter.com/F4fFgdx9hK
— NWS Baltimore-Washington (@NWS_BaltWash) July 12, 2022
Updated at 2:15 p.m. — A Severe Thunderstorm Watch was also just issued for the area.
A severe thunderstorm watch has been issued for parts of District of Columbia, Maryland, Virginia and West Virginia until 10 PM EDT pic.twitter.com/SpwWlujlua
— NWS Severe Tstorm (@NWSSevereTstorm) July 12, 2022
Numerous strong to severe thunderstorms are expected as a cold front pushes through. Damaging winds is the main threat but large hail, an isolated tornado or two, and flash flooding is also possible. Stay weather aware today! #vawx #mdwx #dcwx #wvwx pic.twitter.com/OBK65Xt9OS
— Washingtonian Weather Geeks (@WashingtonianWx) July 12, 2022
Earlier: Arlington and much of the D.C. and Baltimore area is under a Flood Watch today, starting at 4 p.m.
Storms are expected later today, forecasters say. Heavy rain and strong winds are likely.
“Scattered severe thunderstorms are possible this afternoon and evening,” the National Weather Service says. “Damaging wind gusts and large hail are the primary threats. An isolated tornado is also possible.”
More on the Flood Watch from NWS, below.
…FLOOD WATCH IN EFFECT FROM 4 PM EDT THIS AFTERNOON THROUGH THIS EVENING…
* WHAT…Flash flooding caused by excessive rainfall is possible.
* WHERE…Portions of DC, Maryland and northern Virginia, including the following areas: in DC, District of Columbia. In Maryland, Anne Arundel, Central and Southeast Howard, Central and Southeast Montgomery, Northern Baltimore, Northwest Howard, Northwest Montgomery, Prince George’s and Southern Baltimore. In northern Virginia, Arlington/Falls Church/Alexandria, Fairfax and Prince William/Manassas/Manassas Park.
* WHEN…From 4 PM EDT this afternoon through this evening.
* IMPACTS…Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Creeks and streams may rise out of their banks.
* ADDITIONAL DETAILS…
– Strong to severe thunderstorms will move across the region late this afternoon through the evening hours. Heavy rain will accompany a number of these storms which may drop 1 to 2 inches of rainfall in an hour. Additionally, some regions could see repeat thunderstorm activity leading to an enhanced threat for flooding.
– http://www.weather.gov/safety/floodPRECAUTIONARY/PREPAREDNESS ACTIONS…
You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.
A Flash Flood Watch is in effect late this afternoon through midnight tonight to account for increased rainfall amounts in and around the DC/Baltimore metropolitan areas. pic.twitter.com/2jotb79sJV
— NWS Baltimore-Washington (@NWS_BaltWash) July 12, 2022
Arlington and much of the D.C. area will be under a Flood Watch starting tonight.
Heavy rain and storms are expected tonight. The rain is expected to persist through Saturday afternoon, raising the possibility of flooding, including flash flooding caused by “excessive rainfall.”
The Flood Watch takes effect at 11 p.m.
From the National Weather Service:
URGENT – IMMEDIATE BROADCAST REQUESTED
FLOOD WATCH
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1253 PM EDT FRI JUL 8 2022…FLOOD WATCH IN EFFECT FROM 11 PM EDT THIS EVENING THROUGH SATURDAY AFTERNOON…
* WHAT…FLASH FLOODING CAUSED BY EXCESSIVE RAINFALL IS POSSIBLE.
* WHERE…WASHINGTON DC, MARYLAND AND NORTHERN VIRGINIA, INCLUDING THE FOLLOWING AREAS: IN DC, DISTRICT OF COLUMBIA. IN MARYLAND, ANNE ARUNDEL, CARROLL, CENTRAL AND SOUTHEAST HOWARD, CENTRAL AND SOUTHEAST MONTGOMERY, FREDERICK MD, NORTHERN BALTIMORE, NORTHWEST HARFORD, NORTHWEST HOWARD, NORTHWEST MONTGOMERY, PRINCE GEORGES, SOUTHEAST HARFORD AND SOUTHERN BALTIMORE. IN NORTHERN VIRGINIA, ARLINGTON/FALLS CHURCH/ALEXANDRIA, EASTERN LOUDOUN, FAIRFAX, PRINCE WILLIAM/MANASSAS/MANASSAS PARK AND WESTERN LOUDOUN.
* WHEN…FROM 11 PM EDT THIS EVENING THROUGH SATURDAY AFTERNOON.
* IMPACTS…EXCESSIVE RUNOFF MAY RESULT IN FLOODING OF RIVERS, CREEKS, STREAMS, AND OTHER LOW-LYING AND FLOOD-PRONE LOCATIONS.
* ADDITIONAL DETAILS…
– SHOWERS ARE EXPECTED WITH SCATTERED THUNDERSTORMS LATE THIS EVENING INTO MIDDAY SATURDAY. AVERAGE RAINFALL AMOUNTS AROUND 1 TO 3 INCHES ARE EXPECTED, BUT LOCALIZED AMOUNTS AROUND 4 TO 7 INCHES IN HEAVIER SHOWERS AND THUNDERSTORMS. RAINFALL AMOUNTS AROUND 1 TO 3 INCHES WITHIN AN HOUR OR TWO ARE POSSIBLE IN AREAS WHERE THE HEAVIEST RAINFALL OCCURS. THE BEST CHANCE FOR THE HEAVIEST RAINFALL WILL BE OVERNIGHT INTO SATURDAY MORNING.
